What Cisco Switch feature best protects against CAM table overflow attacks？（）A、 Storm ControlB、 Port securityC、 CAM table size definitionD、 IP spoof preventionE、 Network Based Application Recognition
What Cisco Switch feature best protects against CAM table overflow attacks？（）
- A、 Storm Control
- B、 Port security
- C、 CAM table size definition
- D、 IP spoof prevention
- E、 Network Based Application Recognition
相关考题：
You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?A．Switch(config)# switchport trunk encapsulation islB．Switch(config)# switchport trunk encapsulation ietfC．Switch(config-if)# switchport trunk encapsulation islD．Switch(config-if)# switchport trunk encapsulation ietfE．Switch(config-if)# switchport trunk encapsulation dot1q
You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method.When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）A. Switch(config)# switchport trunk encapsulation islB. Switch(config)# switchport trunk encapsulation ietfC. Switch(config-if)# switchport trunk encapsulation islD. Switch(config-if)# switchport trunk encapsulation ietfE. Switch(config-if)# switchport trunk encapsulation dot1q
Refer to the exhibit. Given the output shown from this Cisco Catalyst 2950, what is the most likely reason that interface FastEthernet 0／10 is not the root port for VLAN 2?() A.This switch has more than one interface connected to the root network segment in VLAN 2.B.This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.C.This switch interface has a higher path cost to the root bridge than another in the topology.D.This switch has a lower bridge ID for VLAN 2 than the elected designated switch.
What are two characteristics of a managed Cisco Small Business Switch when recommending it over an unmanaged switch？ （）A、 end-user installed and supportedB、 VLAN supportC、 low initial costD、 desktop installationE、 web-controlled GUI
The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1. What does this command do？（）A、It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.B、The switch assigns a CoS value of 5 to incoming packets.C、If a Cisco IP phone is attached and removed， the switch continues to trust the CoS values as long as the switch is not rebooted.D、It turns on STP to see if a Cisco IP phone is attached.E、If a Cisco IP phone is attached， the switch trusts the CoS.F、None of the other alternatives apply.
f a Cisco switch is configured with VTPv1 in transparent mode， what is done with received VTP advertisements？（）A、They are discardedB、The contents are altered to reflect the switch’s own VTP database and then they are forward out all trunking portsC、The changes within the advertisements are made to the switch’s VTP database.D、The contents are ignored and they are forwarded out all trunking ports.
What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A、CS3B、CS1C、EFD、5E、6
A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down. What might explain what happened？ （）A、The new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.B、The configuration revision of the new switch was higher than the configuration revision of the production VTP domain.C、The link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.D、The ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.
You want to configure switch R1 to propagate VLAN information across the Company network using VTP. What must be configured on a Cisco switch in order to advertise VLAN information？（）A、VTP modeB、VTP passwordC、VTP revision numberD、VTP pruningE、VTP domain nameF、None of the other alternatives apply
You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）A、Switch(config)# switchport trunk encapsulation islB、Switch(config)# switchport trunk encapsulation ietfC、Switch(config-if)# switchport trunk encapsulation islD、Switch(config-if)# switchport trunk encapsulation ietfE、Switch(config-if)# switchport trunk encapsulation dot1q
What is the default Time to Live （TTL） valuse in Cisco FabricPath？（）A、 128B、 32C、 64D、 Dependent on the number of switch IDs in the topology
The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch.What must be done to ensure that this new switch becomes the root bridge on the network?（）A、One router is running RIPv1.B、RIP neighbor is 224.0.0.9.C、The network contains a loop.D、Network 10.10.1.0 is reachable.
The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network?（）A、Lower the bridge priority number.B、Change the MAC address of the switch.C、Increase the VTP revision number for the domain.D、Lower the root path cost on the switch ports.E、Assign the switch an IP address with the lowest value.
A Cisco Aironet 1020 controller-based access point has been connected to a Catalyst 3550-24PWR Switch. However， when it is powered up， the access point fails. What has caused this problem？（）A、access point does not support 802.11hB、incorrect switch power supplyC、switch port is not enabledD、switch does not support 802.3afE、access point has not been initialized with the primary controller
A Cisco Aironet 1020 controller-based access point has been connected to a Catalyst 3550-24 PWRSwitch. However， when it is powered up， the access point fails. What has caused this problem？（）A、access point does not support 802.11hB、incorrect switch power supplyC、switch port is not enabledD、switch does not support 802.3afE、access point has not been initialized with the primary controller
When configuring port security on a Cisco Catalyst switch port， what is the default action taken by the switch if a violation occurs？ （）A、protect （drop packets with unknown source addresses）B、restrict （increment SecurityViolation counter）C、shut down （access or trunk port）D、transition （the access port to a trunking port）
What is the purpose of the cisco Vlan Trunking protocol?（）A、to provide a mechanism to dynamically assign vlan membership to switch portsB、to allow traffic to be carried from multiple vlans over a single link between switchesC、to allow native vlan information to be carried over a trunk linkD、to provide a mechanism to manually assign vlan membership to switch portsE、to allow for managing the additions,deletions,and changes of vlans between switchs
单选题You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）ASwitch(config)# switchport trunk encapsulation islBSwitch(config)# switchport trunk encapsulation ietfCSwitch(config-if)# switchport trunk encapsulation islDSwitch(config-if)# switchport trunk encapsulation ietfESwitch(config-if)# switchport trunk encapsulation dot1q
单选题f a Cisco switch is configured with VTPv1 in transparent mode， what is done with received VTP advertisements？（）AThey are discardedBThe contents are altered to reflect the switch’s own VTP database and then they are forward out all trunking portsCThe changes within the advertisements are made to the switch’s VTP database.DThe contents are ignored and they are forwarded out all trunking ports.
单选题A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down. What might explain what happened？ （）AThe new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.BThe configuration revision of the new switch was higher than the configuration revision of the production VTP domain.CThe link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.DThe ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.
多选题The hardware and software configurations for vPC+ are similar to that of traditional vPC. What are the differences in the configuration of vPC+？ （）AFabricPath switch ID must be configured under the vPC domain.BVirtual switch ID of vPC+ must be configured under FabricPath domain.COn Cisco Nexus 7000 Series Switch， F1 interfaces must be used as the vPC+ peer links.DThe vPC+ peer link must be configured as a Cisco FabricPath core port （switchport mode fabricpath）.EFabricPath subswitch ID must be configured under the vPC domain.
单选题The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network？（）A Lower the bridge priority number.B Change the MAC address of the switch.C Increase the VTP revision number for the domain.D Lower the root path cost on the switch ports.E Assign the switch an IP address with the lowest value.
单选题You want to configure switch R1 to propagate VLAN information across the Company network using VTP. What must be configured on a Cisco switch in order to advertise VLAN information？（）AVTP modeBVTP passwordCVTP revision numberDVTP pruningEVTP domain nameFNone of the other alternatives apply
单选题What Cisco Switch feature best protects against CAM table overflow attacks？（）A Storm ControlB Port securityC CAM table size definitionD IP spoof preventionE Network Based Application Recognition
单选题What is the default Time to Live （TTL） valuse in Cisco FabricPath？（）A 128B 32C 64D Dependent on the number of switch IDs in the topology
单选题What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）ACS3BCS1CEFD5E6
多选题What are two characteristics of a managed Cisco Small Business Switch when recommending it over an unmanaged switch？ （）Aend-user installed and supportedBVLAN supportClow initial costDdesktop installationEweb-controlled GUI